Local Generation of High‐Frequency Plasmaspheric Hiss Observed by Van Allen Probes
Abstract The generation of a high‐frequency plasmaspheric hiss (HFPH) wave observed by Van Allen Probes is studied in this letter for the first time. The wave has a moderate power spectral density (∼10−6 nT2/Hz), with a frequency range extended from 2 to 10 kHz. The correlated observations of waves...
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| Format: | Article |
| Language: | English |
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Wiley
2019-02-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2018GL081578 |
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| author | Zhaoguo He Lunjin Chen Xu Liu Hui Zhu Si Liu Zhonglei Gao Yong Cao |
| author_facet | Zhaoguo He Lunjin Chen Xu Liu Hui Zhu Si Liu Zhonglei Gao Yong Cao |
| author_sort | Zhaoguo He |
| collection | DOAJ |
| description | Abstract The generation of a high‐frequency plasmaspheric hiss (HFPH) wave observed by Van Allen Probes is studied in this letter for the first time. The wave has a moderate power spectral density (∼10−6 nT2/Hz), with a frequency range extended from 2 to 10 kHz. The correlated observations of waves and particles indicate that HFPH is associated with the enhancement of electron flux during the substorm on 6 January 2014. Calculations of the wave linear growth rate driven by the fitted electron phase space density show that the electron distribution after the substorm onset is efficient for the HFPH generation. The energy of the contributing electrons is about 1–2 keV, which is consistent with the observation. These results support that the observed HFPH is likely to be generated locally inside the plasmasphere due to the instability of injected kiloelectron volt electrons. |
| format | Article |
| id | doaj-art-e7ebb1adb0184499ae9e30199f861ced |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2019-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-e7ebb1adb0184499ae9e30199f861ced2025-08-20T02:31:39ZengWileyGeophysical Research Letters0094-82761944-80072019-02-014631141114810.1029/2018GL081578Local Generation of High‐Frequency Plasmaspheric Hiss Observed by Van Allen ProbesZhaoguo He0Lunjin Chen1Xu Liu2Hui Zhu3Si Liu4Zhonglei Gao5Yong Cao6School of Atmospheric Science Sun Yat‐sen University Zhuhai ChinaDepartment of Physics University of Texas at Dallas Richardson TX USADepartment of Physics University of Texas at Dallas Richardson TX USADepartment of Physics University of Texas at Dallas Richardson TX USADepartment of Physics University of Texas at Dallas Richardson TX USASchool of Physics and Electronic Sciences Changsha University of Science and Technology Changsha ChinaSchool of Mechanical Engineering and Automation Harbin Institute of Technology Shenzhen ChinaAbstract The generation of a high‐frequency plasmaspheric hiss (HFPH) wave observed by Van Allen Probes is studied in this letter for the first time. The wave has a moderate power spectral density (∼10−6 nT2/Hz), with a frequency range extended from 2 to 10 kHz. The correlated observations of waves and particles indicate that HFPH is associated with the enhancement of electron flux during the substorm on 6 January 2014. Calculations of the wave linear growth rate driven by the fitted electron phase space density show that the electron distribution after the substorm onset is efficient for the HFPH generation. The energy of the contributing electrons is about 1–2 keV, which is consistent with the observation. These results support that the observed HFPH is likely to be generated locally inside the plasmasphere due to the instability of injected kiloelectron volt electrons.https://doi.org/10.1029/2018GL081578plasmaspheric hisshigh frequencylocal generationsubstorm injectionelectron |
| spellingShingle | Zhaoguo He Lunjin Chen Xu Liu Hui Zhu Si Liu Zhonglei Gao Yong Cao Local Generation of High‐Frequency Plasmaspheric Hiss Observed by Van Allen Probes Geophysical Research Letters plasmaspheric hiss high frequency local generation substorm injection electron |
| title | Local Generation of High‐Frequency Plasmaspheric Hiss Observed by Van Allen Probes |
| title_full | Local Generation of High‐Frequency Plasmaspheric Hiss Observed by Van Allen Probes |
| title_fullStr | Local Generation of High‐Frequency Plasmaspheric Hiss Observed by Van Allen Probes |
| title_full_unstemmed | Local Generation of High‐Frequency Plasmaspheric Hiss Observed by Van Allen Probes |
| title_short | Local Generation of High‐Frequency Plasmaspheric Hiss Observed by Van Allen Probes |
| title_sort | local generation of high frequency plasmaspheric hiss observed by van allen probes |
| topic | plasmaspheric hiss high frequency local generation substorm injection electron |
| url | https://doi.org/10.1029/2018GL081578 |
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